A treatment of medium-energy particle induced fission for spallation-systems’ calculations

Atchison, F.

doi:10.1016/j.nimb.2007.03.004

Cited by 13 publications

(9 citation statements)

References 101 publications

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“…The GEM is an extension by Furihata of the Dostrovsky evaporation model [147] as implemented in LAHET [131] to include up to 66 types of particles and fragments that can be evaporated from an excited compound nucleus plus a modification of the version of Atchison's fission model [148]- [150] used in LAHET. Many of the parameters were adjusted by Furihata for a better description of fission reactions when using it in conjunction with the extended evaporation model.…”

Section: Evaporationmentioning

confidence: 99%

CTOF measurements and Monte Carlo analyses of neutron spectra for the backward direction from a lead target irradiated with 200–1000 MeV protons

Azhgirey¹,

Belyakov-Bodin²,

Degtyarev³

et al. 2010

Nuclear Instruments and Methods in Physics Research Section B:

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A description of the IntraNuclear Cascade (INC), preequilibrium, evaporation, fission, coalescence, and Fermi breakup models used by the latest versions of our CEM03.03 and LAQGSM03.03 event generators is presented, with a focus on our most recent developments of these models. The recently developed "S" and "G" versions of our codes, that consider multifragmentation of nuclei formed after the preequilibrium stage of reactions when their excitation energy is above 2A MeV using the Statistical Multifragmentation Model (SMM) code by Botvina et al. ("S" stands for SMM) and the fission-like binary-decay model GEMINI by Charity ("G" stands for GEMINI), respectively, are briefly described as well. Examples of benchmarking our models against a large variety of experimental data on particle-particle, particle-nucleus, and nucleus-nucleus reactions are presented. Open questions on reaction mechanisms and future necessary work are outlined.

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Section: Evaporationmentioning

confidence: 99%

CTOF measurements and Monte Carlo analyses of neutron spectra for the backward direction from a lead target irradiated with 200–1000 MeV protons

Azhgirey¹,

Belyakov-Bodin²,

Degtyarev³

et al. 2010

Nuclear Instruments and Methods in Physics Research Section B:

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“…The fluxes inside the moderators were calculated. All calculations were performed using the default Bertini-Dresner-RAL [22][23][24] option for spallation and evaporation models. In order to determine the decay heat, the SP-FISPACT evolution code [25] and the activation script from Ref.…”

Section: Neutronic Simulations and Decay Heatmentioning

confidence: 99%

Lead–gold eutectic: An alternative liquid target material candidate for high power spallation neutron sources

Medarde

Moormann

Frison

et al. 2011

Journal of Nuclear Materials

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“…σ f CALCULATION BY CEM AND LAQGSM CEM03.03 and LAQGSM03.03 calculate the fission cross sections (and the yields of fission products and evaporation of particles from them) using a modification of the Generalized-Evaporation-Model code GEM2 by Furihata [5]. GEM2, in its turn, is based on a modification of the older RAL fission-model code by Atchison (see [6] and references therein). For fissioning nuclei with Z j ≤ 88, GEM2 uses the original Atchison calculation of the neutron emission width Γ n and fission width Γ f to estimate the fission probability as…”

Section: Introductionmentioning

confidence: 99%

“…Atchison uses [6] the Weisskopf and Ewing statistical model [7]. All details on the RAL and GEM2 codes and all formulas used by them to calculate σ f can be found in Refs.…”

Section: Introductionmentioning

confidence: 99%

“…All details on the RAL and GEM2 codes and all formulas used by them to calculate σ f can be found in Refs. [5,6]. Let us mention here only that in the case of subactinide nuclei, the main parameter that determines the fission cross sections calculated by GEM2 is the level-density parameter in the fission channel, a f (or more exactly, the ratio a f /a n ), where a n is the leveldensity parameter for neutron evaporation.…”

Section: Introductionmentioning

confidence: 99%

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MCNP6 Fission Cross Section Calculations at Intermediate and High Energies

Mashnik

Sierk

Prael

2014

Nuclear Data Sheets

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MCNP6 has been Validated and Verified (V&V) against intermediate-and high-energy fissioncross-section experimental data. An error in the calculation of fission cross sections of 181 Ta and a few nearby target nuclei by the CEM03.03 event generator in MCNP6 and al "bug" in the calculation of fission cross sections with the GENXS option of MCNP6 while using the LAQGSM03.03 event generator were detected during our V&V work. After fixing both problems, we find that MCNP6 using CEM03.03 and LAQGSM03.03 calculates fission cross sections in good agreement with available experimental data for reactions induced by nucleons, pions, and photons on both subactinide and actinide nuclei at incident energies from several tens of MeV to about 1 TeV.

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A treatment of medium-energy particle induced fission for spallation-systems’ calculations

Cited by 13 publications

References 101 publications

CTOF measurements and Monte Carlo analyses of neutron spectra for the backward direction from a lead target irradiated with 200–1000 MeV protons

CTOF measurements and Monte Carlo analyses of neutron spectra for the backward direction from a lead target irradiated with 200–1000 MeV protons

Lead–gold eutectic: An alternative liquid target material candidate for high power spallation neutron sources

MCNP6 Fission Cross Section Calculations at Intermediate and High Energies

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